Think of a Number Facts, FAQ & Common Questions
1978 · BBC One · Status: Ended · Rated: Not Rated
Frequently Asked Questions About Think of a Number
Direct, verified answers to the most common queries regarding episodes, renewals, watch order, and streaming availability.
How many seasons and episodes does Think of a Number have?
Think of a Number has 5 seasons and 30 total episodes, spanning from its premiere on April 12, 1978.
Is Think of a Number renewed, ended, or canceled?
Think of a Number has concluded its run and is officially ended.
How long does it take to binge watch Think of a Number?
It takes 15h 0m (900 minutes) to watch the complete run of Think of a Number. At a standard pace of 2 hours per day, you will finish the entire series in approximately 8 days. Possible with dedication! Finishing this 15-hour series over Saturday and Sunday requires around 7.5 hours of viewing each day.
Where can you stream or watch Think of a Number?
Think of a Number is available for streaming on Digital on-demand platforms & broadcast archives. Availability may vary by regional territory, subscription tier, and digital purchase availability.
What is the official age rating for Think of a Number?
Think of a Number has an official content rating of Not Rated.
Who are the lead actors in Think of a Number?
The primary ensemble cast includes Johnny Ball (age 88).
Ensemble Cast & Current Ages
Lead cast members, their character identities, and current ages calculated from official biographical records:
| Actor | Character | Current Age |
|---|---|---|
| Johnny Ball | Main Cast | 88 |
Editorial Verification & Sources
All production facts, air dates, cast credentials, and streaming metadata for Think of a Number are compiled from official broadcaster archives, TMDB, and Wikidata records. Last verified on September 25, 2026.